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Configuring VPN Instances on PEs

Configuring VPN Instances on PEs

Context

To enable local VPNs to access each other, VPN instances must be configured on the PE device, and the VPN target attributes must be configured for the VPN instances.

Perform the following steps on each PE device.

Procedure

Run system-view

The system view is displayed.

Run ipv6

IPv6 packet forwarding is enabled.

Run ip vpn-instancevpn-instance-name

A VPN instance is created, and its view is displayed.

A VPN instance name is case sensitive. For example, "vpn1" and "VPN1" are different VPN instances.

(Optional) Run descriptiondescription-information

The description is configured for the VPN instance.

(Optional) Run service-idservice-id

A service ID is created for the VPN instance.

A service ID is unique on a device for distinguishing VPN services on the network.

Run ipv6-family

The IPv6 address family is enabled for the VPN instance, and the VPN instance IPv6 address family view is displayed.

VPN instances support both the IPv4 and IPv6 address families. Configurations in a VPN instance can be performed only after an address family is enabled for the VPN instance IPv6 address family based on the advertised route and forwarding data type.

Run route-distinguisherroute-distinguisher

An RD is configured for the VPN instance IPv6 address family.

A VPN instance IPv6 address family takes effect only after being configured with an RD. The RDs of different VPN instances on a PE must be different.

An RD can be modified or deleted only after the VPN instance is deleted or the VPN instance IPv6 address family is disabled.

A VPN target is a BGP extended community attribute. It is used to control the receiving and advertisement of VPN routing information. A maximum of eight VPN targets can be configured using the vpn-target command.

For each VPN instance configured for mutual access between local VPNs, the VPN target export-extcommunity of the peer end must be set to the VPN target import-extcommunity of the local end.

On the network shown as follows, the import target and export target of VPNA are 100:1, whereas the import target and export target of VPNB are 200:1. To ensure mutual access between VPNA and VPNB, add 200:1 as the import target of VPNA, and add 100:1 as the import target of VPNB.

(Optional) Configure a routing policy for the VPN instance.

In addition to using VPN targets to control VPN route advertisement and reception, you can configure a routing policy for the VPN instance to better control VPN routes.

An import routing policy filters routes before they are imported into the VPN instance IPv6 address family.

An export routing policy filters routes before they are advertised to other PEs.

Create a routing policy before applying it to a VPN instance.

Run the following commands as required:

Run import route-policypolicy-name

An import routing policy is configured for the VPN instance IPv6 address family.

Run export route-policypolicy-name

An export routing policy is configured for the VPN instance IPv6 address family.